Inorganic Chemicals Industry >
Study on controllable synthesis and ultramicroscopic structure-activity relationship of cerium oxides nanocatalysts
Received date: 2021-11-10
Online published: 2022-03-18
The transformation process of valence state of Cerium（Ce） is often accompanied by the storage and release of oxy-gen and the formation and migration of oxygen vacancies（Ov）,thus the CeO2-based materials are widely used in automotive exhaust gas treatment,solid fuel cells,catalysis and other fields.The reversible valence transition of Ce ions（Ce4+⇌Ce3+） is the key to the excellent performance of CeO2-based materials.Under the background of accelerating the realization of the“dual carbon”goal in today′s society in China,CeO2 is bound to have broader prospects in the fields of energy and catalysis.Based on the concept of surface and interface catalysis,nanotechnology and spherical aberration correction transmission electron microscopy,many researchers have designed and synthesized the CeO2 nanocatalysts with rational structure and excellent performance,and conducted the in-depth investigation of its atomic structure,ion valence state,chemical composition and other physicochemical properties in-depth from an ultramicroscopic perspective.Therefore,the latest research progress in the controllable synthesis,facet modification and growth,self-assembly,and functional doping of CeO2 nanocatalysts was reviewd,and the relationship between atomic structure,chemical composition and physicochemical properties was discussed deeply,which was aiming at construction of the ultramicroscopic structure-activity relationship of functional nanocatalysts at the atomic scale and providing the reliable experimental data and powerful theoretical guidance for the design and synthesis of multi-component,multi-dimensional,high-performance CeO2 nanocatalyst.
Xiaodong HAO , Xinyi FENG , Yang XU , Xishu ZHANG , Wen LIU , Fangyuan HAO , Shufang MA , Bingshe XU . Study on controllable synthesis and ultramicroscopic structure-activity relationship of cerium oxides nanocatalysts[J]. Inorganic Chemicals Industry, 2022 , 54(3) : 7 -17 . DOI: 10.19964/j.issn.1006-4990.2021-0628
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